Improvement in dies for forming felly-plates



UNITED TATES ATENT rFIcE.

FRANCIS B. MORSE, OF PLANTSVILLE, CONNECTICUT, ASSIGNOR TO H. SMITH StCO., OF SAME PLACE.

IMPROVEMENT IN DIES FOR FORMING FELLY-PLATES. Specification forming partof Letters Patent No. 125,751, dated April 16, 1872.

To all whom it may concern: ness of the plate to be produced, while atthe Beit known that IFRANGIS B. MORSE, of edges it will be muchnarrower, the space Plantsville, in the county of Hartford and graduallydiminishing from the center toward State of Connecticut, have invented anew the edges, as more fully hereafter described. Improvement in Diesfor Forging Fell 7-Plates 5 A is the lower die, of the form of theinterior and I do hereby declare the following, when of the plate, andis provided with two studs, taken in connection with the accompanying ac, corresponding to the perforations d in the drawing and letters ofreference marked thereblank B, as seen in Fig. 5. C is the upper on, tobe a full, clear, and exact description of die, of a form relative tothe lower die, the same, and which said drawing constitutes as seen inFig. 3, so that the space between part of this specification, andrepresents, inthe two dies, when set together, will be the Figure 1, aperspective View of the lower greatest thickness at the center,gradually die Fig. 2, a perspective view of the upper diminishing to theedges, and the said upper die Fig. 3, a transverse section of the twodie constructed with perforationsb corresponddies; Fig. 4, a transversesection of the plate ing to the studs c of the lower die. The blankproduced by the dies 5 Fig. 5, the blank from B is cut from a sheet ofsuitable metal, of the which the plate is produced 5 and in Fig. 6, formand size required for the plate, less so an outside view of the plate asproduced nmuch as the plate will be extended in drawing, ished from thedie. and is perforated at the two ends d to form This invention relatesto an improvement the bolt holes. This flat blank is placed upon in diesfor forging what are known tothe trade the die A, setting theperforations d of the asv felly-plates-that is to say, the plate blankonto the studs a, which retains the which is placed upon the inside ofthe felly blank in a central position on the lower die. over the meetingends of the felly to hold the The upper die is struck down onto the saidends in their proper relative position. Hereblank with sufficient forceto curve the blank tofore this plate has been made of an equal aroundthe form, and which process, owing to thickness over its entire surface,or slightly the peculiar shape of the dies, as beforedechamfered aroundits edge; in either case the scribed, not only curves the plate, butdraws additional thickness of the .plate is exposed or extends the platefrom a point at or near and gives to the wheel at that point a bunthecenter to the edges, gradually reducing glin g appearance. By myinvention this diffithe plate in thickness from this point to the cultyis overcome; and it consists in dies, conedges, as seen in Fig. 4,producing the plate structed as hereinafter described, to draw the inexternal appearanceas seen in Fig. 6. To plate from a point at or nearthe center to the form a ilat4 surface around the bolt-holes, I edges,whereby the plate is gradually reduced make a recess in the die, whichwould form a from the said point to the edges, so that when projectionon the plate, or make a projection placed upon the wheel the internalline of the in the die to produce a fiat depression at that felly is solittle changed as to be scarcely perpoint in the plate. ceptible. Myinvent-ionconsistsintwo dies, one 4 I claim as my inventionbeing of theform of thefelly at the place where The dies A C, constructed as hereindethe felly is to be applied, the other of a circle of scribed, forforging felly-plates.

slightlylarger radius, but from a point eccen- F. B. MORSE. tric to thecenter of the inner die, so that when Witnesses: one is set over theother the space between E. E. PADDOGK,

the two dies at the center will be the thick- AsA. L. FowLER.

